$(function() {

	// assign event for active inputs
	$("#block5 :input").focus(
		function(){
			$(this).addClass("inputa");
			}
		);

	// remove event for inactive inputs
	$("#block5 :input").blur(
		function(){
			$(this).removeClass("inputa");
			}
		);

	// place focus in first empty input
	$("input[value='']:first").focus();

	}
);